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BIOL 530

We will use the latitudinal increase in diversity towards the equator as a launching point to explore how diversity forms, is maintained, and disappears, and why we find such dramatic variation in diversity around the world.

Course discussions will focus on both evolutionary and ecological perspectives of diversity, and we will review various hypotheses to explain latitudinal diversity gradients.

Class schedule     
Mondays 10:00 - 11:30am & Wednesdays 8:30 - 10:00am

Week 1    Mon, Jan 9, 2023   Introduction & complex questions in science
                 Wed, Jan 11, 2023    Strong inference  **meet by Zoom**
   

Week 2    Mon, Jan 16, 2023    Multiple working hypotheses
                  Wed, Jan 18,
2023    Biological patterns across latitude
   

Week 3    Mon, Jan 23, 2023    A framework for studying diversity gradients
                  Wed, Jan 25,
2023    The latitudinal gradient through deep time
 

Week 4    Mon, Jan 30, 2023   Latitudinal Variation in Cladogenesis & Extinction

                 **Student presentations begin**  

                 Wed, Feb 1, 2023    Janzen's Hypothesis - presenter: Claire; co-presenter: Katriona
 

Week 5   Mon, Feb 6, 2023    Asynchrony of Seasons Hypothesis - presenter: Brendan; co-presenter: Sterling
                 Wed, Feb 8, 2023    Shifting Ranges Hypothesis - presenter: Rachel; co-presenter: Nayla
 

Week 6   **no meetings**  Paul away teaching field course

Week 7   Reading week    (February 20-24)

 

Week 8   Mon, Feb 27, 2023    Species Energy - Rates of Evolution Hypothesis - presenter: Caleb; co-presenter: Brendan
                  Wed, Mar 1, 2023    Biotic vs Abiotic Selection Hypothesis - presenter: Tara; co-presenter: Victoria 

Week 9   Mon, Mar 6, 2023   Geographic Area Hypothesis - presenter: Ailsa; co-presenter Izabelle  
                  Wed, Mar 8, 2023  Species Energy - Number of Individuals Hypothesis - presenter: Kiely; co-presenter: Rachel
 

Week 10  Mon, Mar 13, 2023   Glacial Extinctions Hypothesis - presenter: Sarah; co-presenter: Ailsa 
                  Wed, Mar 15, 2023   Tropical Niche Conservatism Hypothesis - presenter: Emma; co-presenter: Claire

Week 11  Mon, Mar 20, 2023    Density-dependent Mortality Hypothesis - presenter: Katriona; co-presenter: Caleb 
                  Wed, Mar 22, 2023  Climate Stability - Population Size Hypothesis - presenter: Nayla; co-presenter: Tara
 

Week 12  Mon, Mar 27, 2023   Biotic Interactions - Ecological Breadth Hypothesis - presenter: Sterling; co-presenter: Kiely
                  Wed, Mar 29, 2023  Evolutionary Time Hypothesis - presenter: Victoria; co-presenter Sarah  
 

Week 13  Mon, Apr 3, 2023   Environmental Harshness Hypothesis - presenter: Izabelle; co-presenter: Emma
                  Wed, Apr 5, 2023    Wrap-up discussion

Grade breakdown

Presentation of hypothesis & predictions  30%          instructions & rubric

Co-presentation of critical assessment  15%          instructions & rubric

Major written paper  35%          instructions & rubric

In-class participation  20%          instructions & rubric

There are no formal exams in this class.

Class readings    (I will send out readings each week by email)

Week 1    Mon, Jan 9, 2023     no readings
                 Wed, Jan 11, 2023    Platt 1964 Science 146:347-353
   

Week 2    Mon, Jan 16, 2023    Chamberlin 1965 Science 148:754-759
                  Wed, Jan 18,
2023   Hillebrand 2004 American Naturalist 163:192-211
   

Week 3    Mon, Jan 23, 2023    Jablonski et al. 2006 Science 314: 102-106
                  Wed, Jan 25,
2023    Mannion et al. 2014. TREE 29:42-50

 

Week 4    Mon, Jan 30, 2023    Weir & Schluter 2007 Science 315:1574-1576 &

                                                                        Martin et al. 2007 J. Evol. Biol. 20:930-936
                 Wed, Feb 1,
2023    Ghalambor et al. 2006 Integr. & Comp. Biol. 46:5-17

Week 5   Mon, Feb 6, 2023    Martin et al. 2009 Ideas Ecol. Evol. 2:9-17.
                 Wed
, Feb 8, 2023    Dynesius & Jansson 2000 PNAS 97:9115-9120


Week 6   Mon, Feb 13, 2023    Schemske 2009 book chapter
                 Wed
, Feb 15, 2023    Rosenzweig 1992 J. Mammalogy 73:715-730

Week 7   Reading week   (Feb 20-24) 

 

Week 8   Mon, Feb 27, 2023    Allen et al. 2006 PNAS 103:9130-9135
                  Wed
, Mar 1, 2023    Wright 1983 Oikos 41:496-506  &

                                                                 Currie & Paquin 1987 Nature 329:326-327

Week 9   Mon, Mar 6, 2023    Adams & Woodward 1989 Nature 339:699–701 &  

                                                            McGlone 1996 Global Ecol. Biogeogr. Letters 5:309-314
                  Wed
, Mar 8, 2023    Wiens & Donaghue 2004 TREE 19:639-644

Week 10  Mon, Mar 13, 2023    Hille Ris Lambers et al. 2002 Nature 417:732-735
                  Wed
, Mar 15, 2023    Klopfer & MacArthur 1961 Am. Naturalist 95:223-226

Week 11  Mon, Mar 20, 2023    Connell & Orias 1964 Am. Naturalist 98:399-414
                  Wed
, Mar 22, 2023    Dyer et al. 2007 Nature 448:696-699

Week 12  Mon, Mar 27, 2023    Fischer 1960 Evolution 14:64-81 (excerpt only)
                  Wed
, Mar 29, 2023    Brown & Gibson 1983 (excerpt from book) &

                                                              Thiery 1982 Biological Reviews 57:671-710 (excerpt)

Week 13  Mon, Apr 3, 2023    Collwell & Lee 2000 TREE 15:70-76
                  Wed
, Apr 5, 2023    Jetz & Fine 2012 PLoS Biology 10:e1001292

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